The site is a mess on the Athlon 64 X2 computer with the xorg radeon driver. It is also mirrored with SeaMonkey 2. It displays correctly on the laptop with the Intel driver. On Opera, both systems, it's fine.--GrannyGeek

For what it is worth, I've been able to make the mirroring happen on my laptop as well. I usually use the proprietary driver for the nvidea GO 7300, but I messed around with a couple of different setting until I finally got www.teaspring.com to mirror for me.

What finally worked was a combination of the nv driver and firefox 3.5.5.

That's it, don't really have a solution other that switching back to the proprietary driver or maybe vesa or fbdev.